Actually, if you are going to parallel two strings into one MPPT input the Vmp specs for the two strings should be within 5% and the current spec for all of the panels within one string should be within 5%.
If you have two MPPT inputs, some MPPT devices want to see roughly matched power between the two to allow use of the device at its full rated power. Others don't care.
If you have two MPPT inputs, some MPPT devices want to see roughly matched power between the two to allow use of the device at its full rated power. Others don't care.
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